Re: [PATCH 2/5] srcu: Fix error handling in init_srcu_struct_fields()

From: Joel Fernandes
Date: Thu Jul 27 2023 - 00:24:20 EST




> On Jul 27, 2023, at 12:02 AM, Paul E. McKenney <paulmck@xxxxxxxxxx> wrote:
>
> On Wed, Jul 26, 2023 at 11:04:04PM -0400, Joel Fernandes wrote:
>>
>>
>> On 7/26/23 17:07, Paul E. McKenney wrote:
>>>> - free_percpu(ssp->sda);
>>>> - ssp->sda = NULL;
>>>> - kfree(ssp->srcu_sup);
>>>> - return -ENOMEM;
>>>> - }
>>>> - } else {
>>>> + if (!init_srcu_struct_nodes(ssp, GFP_ATOMIC))
>>>> + goto err_free_sda;
>>>> + else
>>>> WRITE_ONCE(ssp->srcu_sup->srcu_size_state, SRCU_SIZE_BIG);
>>> Given that the "then" clause is a goto, what is the "else" clause doing
>>> for us?
>>>
>>
>> Not much. Agreed we can get rid of "else" and reduce indent of the
>> WRITE_ONCE that follows.
>>
>> Would you mind making this fixup in the patch for your apply, or would
>> you like me to refresh the patch? Let me know either way, thank you!
>
> Please include it with your next series, which has at least one other
> change anyway. ;-)

My pleasure ;-).

- Joel


>
> Thanx, Paul